Automatic safety stop device for electric vehicles.



' No. 857,890. A PATENTED TUNE z5, 19o?,

J. T. MGTNTOSH. AUTOMATIC SAFETY STOP DEVICE TOR ELEGTATGVTHIGLES.

APPLOATIN FILED JUNE 14, 1902, y

2 SHEETS-SHEET l.

lllllll worm mno q, :amarre waLHEL No. 857,890. l PATENTED JUNE 25, `1907` J. T. MGINTCSH. AUTOMATIC SAFETY STOP DEVICE ECR ELECTRIC VEHICLES.

ABPLoATIoN'rILED JUNEM, 1902.

2 SHEETS-SHEET 2.

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, Tosri, a citizen of theUnited States, residing' at Chicago, in the county of Cook and State' :paura srATnrnrnNr onirica-.1

JOHN rrioMAs' Mein-Toss, oncursado, naliNoi's, AssiGNo'Rv croira-THIRD To afZZ- whm, t may concern:

Be it known that I, JOHN THOMAS MOIN- of Illinois, have invented a new and useful Automatic Safety Stop Device for Electric Vehicles, ofwhich-the following is a specification.

`My invention relates to electric controllers and iluid pressure brakes for cars or any veeY hicle propelled by electricity and having a fluidv I.pressure brake apparatus and the objects of kmy invention are to provide means for controlling the electric current and for control- Is' the application of the braketo the car or ling at' the saine time, by simple mechanism,

vehicle to which it is attached, whereby the use of the electric current isrendered more safe than heretofore and the application of the brakes is Asecured with more certainty- 'than heretofore, and Whereby"certa'in results previously requiring intelligent action by the motorman orperson-in-'charge of the car or other vehicle, are-"secured by'automatic action; and whereby` the operation of 'the car or other vehicle is rendered more safe and the control of the electric vcurrenta l the brake apparatus -is secured in.case accident or emergency. I secure these results by the mechanisms and methods illustrated 4in the accompanyingl drawings in which.

arm in the usual way'. Fig. 3 is a plan show-- .isa section on lines 4 4 of Fig. 1.

Figure 1, is a sectionalview of my con-- troller arm and attachments when the opera- .tos hand is removed. Fig. 2 isa plan ol" my controller arm and attachments when the operators hand is applied to the controller ing thejair brake pipe when the deviceis used Witha straight air brake apparatus. Fig. 4

is a section onlines .5*-5 of Fig. 1" showing the lock forthe controller arm. Fig. 6 is a detail of the lever. pipe connection, when the` straight air brake system isused.

. Similar letters refer to similar parts throughout the drawings.

'My invention is designed to `be used in connection with any of-the ordinary forms of controllers now in` use for the purpose of controlling thefcirrrent of electricity applied to a caror other vehicle or 'independently of the saine and itvrnayalso be used inthe ab- I Speoficatrn. of Letters Patent;- 5 Appliaaniea'iune14,1902. summe-111.592- f Fig. 5'

Figs. 7, Sand 9 show the- 'Patented June e5, 1907.. Y

' sence of the electriccurrent' in controlling the apV lication of the brakes independently The current after passing' through theicontroller, enters the controller box on its return A from the motors (not shown) through the ground Wire A and when in operation passes through contact plate `C, into B, a continuav ltion Aof ground wire Upon the lower end of rod D and extending for severalinches lin the chamber or cylinderN inthe same .manner a slide valve ordinarily operates,

either opening or closing the passage in the branch-train'line O according to the position of such piston M. The branch train line O is connected at the end of. the pipe P in the case of an automatic brake apparatus with thefmain train line-and terminates at the end Q opposite to P in an opening to the. atmosf phere. The. branch train line O when the apparatus is `used in connection with a straight air brake apparatus, is connected through the pipe P with the main air reservoir and dotted lines in Figs. 1 and 2 as pipe P) is connected with the main trainline.

. Figure 1 shows the apparatus Withthe electric current broken and the air lpassage open, in which positionthe slight expansive force of the spring R resting upon' its seat S, or, it

through the .pipe Q extended (shown in may be if desired the superior weight alone of the parts operating on the ulcrum H, maintains the joint F at the end of. the lever G in the position shown in Fig. 1, pushing the rod D downward and breaking 4the circuit be- `vtween the WiresA and B, interposing-the insulator Efbetwe'enth'eutwo l-wires- A and B and thus .preventing 'the current of electricity from flowing through the Wires A and B. 'At the same time the rod D connected atl the joint F with the lever G 4remains in the position as shown in Figjl, bringing the piston M to the lower partof the cylinder N and open- IOO ' 40 tricity to llow vfrom A to B.

2 A asa ing ltle O sov that rthe* air has a free passage iti-said pipe O troni the pipe P to Yopening Q. The resultfof this position of the ,appa- Y ratus is that the electric circuit is broken and 5 the air freely passing from pipe P to opening Q produces, where the attachment is operated in connection withan automatic air brake, a passage of air from the train line connected Withpipe P to the atmosphere, into which Q oopens, thus decreasing the pressure in the train line, which operates by a well-known mechanism to apply `the brakes upon the car; and in the ease of a so-called straight air brake apparatus, the opening of the passage in the branch train line O produces a passage of air through the pipe P from the reservoir to which it leads, as above described, tothe pipe P and thus into the train line as above described operating by well-known mechanism to thereby apply the brakes to the car or other vehicle.

F 2shows the operation of the apparatus illustrated in Fig. l. Vhen the knob L is pressed down by the hand or' the operator,

the rod .l likewise moves downward and imposes a downward motion at point l ol" the lever G and an upwardmotion ol the end F of the lever (l, compressing the spring R toward its seat 5 and likewise imposing an upward movement upon the rod D through which the piston )l mores upward through its chamber or cylinder X and operates to close the opening in the train line t) as indi- `cated in .Pig 2. The upward movement ot end l" ot lover G likewise moves rod l) up- 45 brought againstthe electric conduits A and B, the circuit is thereby closed and at the same time through the action ol rod D the piston M closes the branch train pipe and prevents the passage ot' air from lj to Q and 5o thus prevent-s the application oll brakes to tlie car or other vehicle. So long as the pressure on the knob L is maintained upon the top of the handle K as last explained, the electric cinrent is perniit-tet'l to ilow and can 55 be controlled in the usual way by well-known mechanism, but the moment the pressure upon the knob L is re ased, the spring lt'or the weight` as aforesaid acts, the contact i plate is lorced downward, thus opening 6o the circuit and eut-ting olll the electricity and at the saine time thepist'on MV is ioreed downward. opi-ning the branch train line O and ailruring the air to pass from. l to Q, thus rci quiring tlu operator during all the time the controller is in operation, to keep his hand any accident to the operator resulting in the removal ot his hand from lthe knob L, the current is instantly broken, which instantlr acts as aforesaid to stop the car or other vehicle. l

Explanation of drawings jor straight wir equipment.' in making connections for straight air, the pipe P would be connected to the main reservoir pipe, (that is the pipe leading from main reservoir to engineers Valve) (not shown). The pipe P"\Vould be continued and connected to the main train line. with air, pipe P would be charged up to the. piston M, said piston stopping the passage 'it air into pipe P when the mechanism is in the position shown in Fig. S.

Fig. 7 shows the position oi the mechanism when the operators hand is removed Jfrom the knob L, showing` an open electric circuit, by contact plate C being` forced by spring R away from contacts A and B at the same instant the piston M has been drawn by the same movement through cylinder N thus allowing the air in pipe P to freely llow into pipe P thence into the main train lineitnot shown) and from main train line into brake cylinder, thus setting the brakes. Everything would remain in this position until restored to normal position by hand by the -lollowinfr i'irocedure. Supposing that the operators hand has been removed through carelessness or accident while ruiming full speed, this movement would have caused an open ci luit and applied the brakes as just described and to release the brakes, the controller should be returned. to oli' position (not shown), then by placing the hand on knob L the piston M is returned to its seat, thus again closing the passage l'i om pipe l to pipe P', non the operator by throwing the engineei"s valve (not shown) into release position would allow the air that had been *forced into' the main train line and brake cylinders to esca-pe to the atmosphere in tho usual manner through the engineersv Valve and release the brakes. This mechanism is designed to be used in conjunction with the electrical and air brake equipments already in use, and is not designed to displace any partv oi them. it has nothing to do with the feeding ot current into the motors, that being done in the usual ma'nncr7 it merelxv causes an open circuit in gi ound wires A and B by forcing contact plate (l away l'iom them and interposing'the insulator E. Neither is it designed lor ay-)plying the brakes in all cases, the ordinary stops being made in the usual manner by the operator using the engineers valve. This mechanism does not `interfere in any way with the operation oli the brakes in the usual manner. lt is dely signed to automatically cause :inopen eleci tric circuit and at the same instant to apply lVhen 'the main reservoir is charged pressed upon thevknob L and in the' IOC IOS

the brakes when the Aoperatoraccidentally or tlu'ough carelessnessrenoves hishand from Release of automatic brakes.; When piston M is pulled from s seat, bythe removal of operators hand fr In knobL, Fig. 1, pipe .P havingbeenconnected to main train line,

thev same being charged with air inthe usual manner, the air will pass from pipe P through o cylinder N to the atmosphere at opening Q,

"6o troller shaft or sleeve.' This avoids; the

thus'caus'ing a reduction of train line pressure and setting the brakes in the usual manL ner.` To release, the piston-M niust be re'- turned to its seatas before described, -then the ,operator by throwing his engineers Ivalve in release position will release the brakes-by restoring 'train-line pressure in the usual manner. f

Acut-off'valve U is interpose din the pipe Pto disconnect the apparatus fromfthe train line'in thekcase of the automatic air .brake apparatus and in the case of a straight air brake apparatus, todisconnect the pipeP from the main air reservoir.

The entire apparatus may be renderedvinr' operative and maintained in .either the con- 'dition sh'own in F ig. 1 'or that shown in Flg.

2, `by a pin lock operated by inserting the pin Y in the pin hole 1,thus.maintaining O the leverG in its position as shown in either Fig. 1- or Fig. 2 as desired and locking the apparatus .either on or off. `A-padlock 1 (not ,sno'wn) Amay fasten the-pin lock securely against meddling. or accidents..

Unions V and W are inserted in branch train line O and P tofacilitate the disconneotion of the cylinder .N and -a union V is inserted in the rod D to facilitate disconnection of the controller arm from the controller.'

I 'am aware that mechanism existen/hereby onfthe release of the controller arm from the -hand ofthe operator ythe electricity is automatically cut off; but I do not know that anyone but myself lhas ever 'heretofore combined such. automatic out off of the electricity with a connected and synchronous application of the air brakes on a car'or other vehicle. I p

It will be seen that whilein-the operation 5o of 'breaking the circuit merely, any device may be similarto known devices, yetthese devices 1n order to reset the circuit breaker,

or restore the current, rely-on some move-- ment ofthe controller handle, usually lateral,

5 5 and to off position; whereas,.by my'device the circuit may be both broken and restored either one time or successively, directly, and

ifdesired with a still handle, and .this without f change of the position .of any controller,` condanger from an are Welding the'oontacts or destroying 'any of those features and the oon-1 sequent loss of train control by the motorman not being able to shut off power,as even if this happensin 'motors having my ldevice the motorman has onlyto` raise his hand from the knob L and the circuit is automatically broken at another point, and the brakes synchronously-applied and the train stop ed.

restore the circuit andvrelease the. brakes,

sure onthe pushbutton L,.perf o1'ms both these operations. These `synchronous. fop- `erations of breaking the circuitand setting the brakes,- and restoring the -circuit and releasing thefbr'akes by successively pushing and releasing the'knob .o r push-button L may be alternately -performed in rapid succession as often as desired and with either a stillv or moving ,controller handle. Thus the powerful effect of the joint deterrent ac-- Agaiii, if the controller was still disable ,.to

controller action is not necessary, as prestionof the applied electric cut-off and brakes i.

may be graduated at'the will ofthe motorman by successive pressure and release of the cuit breaker-to be turned to an off orto another position.` Except as to limitations iniposed .by theprior art, I do not limit my invention, asthe features of successive automatic opening of the circuit withl or Without a still handle mall-positions ofthe controller (or without a controller) alternating with the closing' of. the circuit and the closing of the y tric power the air brake partv of my` appara- I oc I depart thev spirit and f tus and its controller connection will be effective, as' then on the release' of the controller halidle by: the operator, the brakes are set automatically, independent-ly of j. an electric current. 1

I do. not conine *myself to the valve `shown as it is apparent that other valves or means of effecting the setting' of brakesby opening and closing pipes' than'those shown, may be used; nor do I conne myself to the exact form' of controller arm and lever'illustrated in the drawingas it is apparent thatother 'levers ormechanismmay-be used to produce the saine .resultsbut tosecureby Letters Patent is:

l. An automaticV 4safety 'stop device comprising a mechanism in the controller arm of an electric motor4 synchronously operated nection,- substantially as escribed and with' an air-brake valve through a lever conshown.

W'hat-I'claim as my 'invention and desire- 8 push-button L. These actions are not feasible with controller or other devices which i require either to. actuate or to reset the cirthe electric circuit switch with the air-brake valve, a pin-lock in the lever mechanism for locking the air-brake valve, substantially as described and shown.

3. In a united electric .controllel and fluid4 pressure brake, having lever mechanism within a contrpller thandle connectingI the electric circuit switdh withthe brake valve, means tor locking the lever mechanism4 el. An automatic safety stop device co'mprising a mechanism in the controller arm ol".`

an electric motor, synchronously operated with an air-brake valve through a suitable connection, substantially as described and shown.

5'. An autoi'natic rsafety stop device comprising a mechanism in the controller arm of an electric motor synchronously operated with an air-brake valv and a circuit breaker, through a lever connection, substantially as described and shown.

6. In a salety stop device, a system of airbrakes working in conjunction with an electriccontrolling device, a controlling stand, a controlling arm' and an air pipe, and mechanism so arranged that by the pressure of the hand on the controlling arm handle, the electric circuit and air passages are closed synchronously, substantiallyv described and shown.

' 7, An automatic safety stop device'coinprising a mechanism in a controller arm, the compressed air pipe ol" an air-brake, and a valve automatically operated by the automatic action of the mechanism in the controller arm to open the air-brake valve.

S. A safety stop device comprising a system of air-brakes working in conjunction with an electric controller device, a controlling stand,a controller arm, a mechanism in the controller arm, and an air pipe in which a mechanism is sofarrangedthat by the removal of the hand from the mechanism in the controller arm, the electric circuit is broken and the air-brakes applied both synchronously and automatically.

9. ln combination a motor circuit a jointly controlled power operated brake, and electric switch, normally, and in operation, holding the brake released and the current on, a controller having a handle to close and open the circuit and responsive; to pressure to complete the circuit and hold the brake and switch in normal position, andnieans to synchronously and automatically break the circuit and set the brakes on removal of the pressure without removing the handle to oilI or to any position.

10. lnan electrically propelled vehicle a jointly-controlled iluid pressure brake and electric switch normally and in operation holding the brake released and the current on, a controller having a handle to close and open the circuit and responsive to pressure to complete the circuit and yhold the brake and switch in normal position, and means to synclnonously, automatically and directly break the circuit and set the brakes. on removal of the handle pressure without returning the handle to. otl position.

1l. in an electrically propelled vehicle in combination, an electric circuit, a jointly controlled brake mechanism and electric switch both operated from asingle handle, andv means to complete the circuit and release the brakes onpressure upon the handle, and to.siinultaneously and automatically apply the brakes and break the circuit, on rclease of the handle pressure, without controllcr action.

i2. ln combination an electric circuit torthe application of power, a controller for the circuit provided with a handle lor closing and' opening the circuit, a circuit breaker, an additional handle, and means to break the circuit and to restore the circuit by successive release and pressurev ol the additional handle, without movement of the controller liandle. i3. in combination a motor control circuit, a controller in the circuit, a handle for the controller, a valve to operate an air bra-kc, a circuit breaker in the motor control circuit, means to hold the valve and circuit breaker to joint action, and an additional spring-sustained handle, connected with the valve and switch, and holding the circuit normally broken and the valve normally open, but both responsive to pressure to close the circuit and close the valve.

ll. A safety stop device for electric vehicles comprising the operative valve of a brake actuated by lluid pressure, an electric motor, an operating circuit therefor, a switch in said circuit, in operation normally closed by pressure, a controller and handle for closing and opening thc circuit, and an additional handle connected with the switch vand the operative valve, for actuating the switch and the operative valve, said additional handle acting automatically, synchronously and independently of controller action to break the circuit and apply the brakes on release of' the said pressure.

15. In combination an electric circuitforl roo and opening'the circuit,- a circuit breaker, an.

released and the circuit closed, a controller.

havin a handle to close and open the circuit contro ling the motor and carrying a pushbutton responding to pressure to hold the brake and switch in normal position and control Asaid brake and switch. v l

18. In 'a vehicle propelled by electric power and having a motor circuit, the valve zo 'of an air brake ap aratus, a circuit breaker for the circuit, an connections, means controlled by a pushbutton'forei'ecting successive joint automatic applications of the brakes .andopenings v of the electric circuit,

alternated with joint manual closing of the circuitV and air brake valve.v

1 9. The combination with an electric cir- -cuit used in giving power to electric vehicles, ofa safety stop device comprising a brake ac- 30. tuated 'by Huid pressure, a push-button re- 's onsive to pressure and resilient thereuner, meansl to connect the push-button with thebrake and a circuit breakin device, a

`circuit breaking device arrange to act in. 3 5 harmony `with a brake to automatically break -the'circuit and automatically set the brake onrelease of the push-button.

20. In a vehicle propelled by electric power and having a motor circuit and a rake aplparatus, -means jointly :controlled by a pus -button for simultaneously and automaticallyrobbin the circuit of power and automatically app ying the brakes on release of the push-button.

v 21.` In a vehicle propelled by electric power and having a motor -circuit normally roken and the valve of an air brake nor- `Inally open, means-jointly controlled by a push-button for simultaneously closing the 5 circuit and closing the air brake4 valve by pressure-on the push-button.

H22. In a vehicle propelled by electric powerand having a motor circuit, a Huid y pressure.;bra ke apparatus, a circuit breaker for the circuit, and connections, means controlled by a push-button for effecting successive joint' ap lications of brake and circuit breaker by' a ternate pressureand release of the push-button. 6o 23. In combination, an electric circuit for propellingl vehicles, Ja controller in the circuit,acircuitbreaker, and means, controlledlv from the controller, allowing successive rep eti-tlons of automatic breaking, and manual closingiof the motor controi circuit, with a still: controller.

24. In a device for regulating the application of electric power, a controller, a -controller handle therefor, a circuit breaker, and mea'ns `controlled'rom said handle for automatically breaking the `circuit and manuallyresetting the circuit breaker independ. ently of controller. ac tionff 25. In a d'eviceifor controlling the application of power, a controller, a controller han.` 7 5 dle therefor, a circuit breaker, the valve of an air'brake, and means controlled from said handle to automatically open the circuit and airbrake valve and to manually reset the circuit breaker and vclose the air brake'valve all lindependently of controller action.

26, In a device forregulating the application of electric power an electriecircuit, a controller-therefor, a handle for the controller, a brake actuated by Huid pressure, 'and means, controlled from saidhandle tov automatically set the brakes, independently of4 controller action on release of the handle. 27. Ina device for regulating the application of electric power, an-'electric circuit, a controller, therefor, a handle for the 4controller, a circuit breaker, a brake actuated by uid pressure, and means controlled from saidA handle to automatically and to jointly" set the brakes and break the circuit, independentl of controller action, on release of 'the hande.

28. The combination with a controller i"or electric circuits of a circuit breaker normally in operation in series with the controller, means for fopening the circuit 'at desired Itimes by actuating the circuit breaker and means independent of controller actionfor resetting the circuit breaker.

29. Incombination an electric circuit for the application of power, a controller for the circuit, a handle for the controller, a switch normallyclosed in operation, an air brfe valveJnormally closed when theV circuit is closed, an additional handle to operate the switch and the'. brake, and means tol cause the -switch and brake valve to assume their said normally closed positions, upon pressure .on the additional handle.

. 30. In combination an electric circuit for the application oipqme'r, a controller, a handle for the controller-,an air brake, a switch for the circuit, and an additional handle holding the circuit normally broken and the air brake pipe normali open, but responsive to pressure to close t e circuit, and air brake pipe. .v M

31. In an electric mechanismhaving a motor controller, an operatingcircuit, a handle to close the circuit, a power actuated brake, a switch in operation maintained nor\ mally in circuit, means'responsveto pressure and carried by the controllerarm but IOO IIO

operating indepcinlently thereof for maintaining said switch in circuit and the brakes released and to automatically throvv the switch and break the circuit and applythel brakes, in all positions of the controller arm on release of the pressure.

52. ln combination a iiuid pressure brake, a motor controller having an independent mechanism carried by the controller arm and connected with-the brake and automatically operative to set the brake in all positions of the controller, on release of the controller handle.

in combination, an electric circuit, a motor controller in the circuit, and an independent mechanism carried by the controller and operative to automaticallyv break the circuit in all positions of the controller handle on release of said handle.

33t. in combination, an electric circuit, a. motor controller' controlling the application of power, circuit breaker operating independently of the controller' act-ion to break the circuit and means to canse automatic action of t-he circuit breaker on release of the controller in all positions of the controller.

35. In an automatic safetv stop device for electric vehicles, in combination an electric circuit, amotor controller controlling the application of poner, a brake to check the. mtunenturn, an cnurgcncf-vY device in the con.- trolier arm operatively connected to the brake and means to automatically set the brake on re.easc oi' the controller arm.

3G. An automat ic safety Vstop device cornprising anrotor controller having an operative arm, an air brake valve, a circuit, a circuit. br aker in the circuit and means operating through mechanism in the controller arm to automatically set the brake and synchronously (mera-te the circuit breaker.

37. ln combination, a motor controller, a

' handle for said controller, a brake operated by compressed air, ay valve for controlling the application o lil the. brake, mea-ns carr'ied by the controller, but acting irulcpcndentlv thereof, for automatically operating the valve to appl'v said brake when the controlling handle is released.

23S. In combination, a motor controller, a handle for said controller, an air brake. a valve for cont'roliing the. application of the brake', means carried by the controller but acting indepelulentlv of controller action, for autormitieall)Y operating said valve on release of the` handle and means for operating said `operating nreans.

39. A safetv stop device for electric vehicles comprising an electric circuit, a cont-roller for the circuit liable to be locked b v'an arc or defect in controller mechanism, and emergency means, carried bv the controller, but operative independently of the cont-roller and with astill controller shaft, to automat.- ica-lly set the brakes and break the circuit.

4 0. A safety stop device for electric vehicles comprising an electric circuit, a controller normally controlling the circuit but liable i to be lockedv through an are, dei'ect or accident, and emergenc)v means to automaticallrr' l set the brake on release ol the controller operating means.

-L'L ln combination, an electric circuit for propelling vehicles, a controller in the circuit, a brake operated by lluid pressure, and means independent of controller action, for automatically setting the brake on release of the controller.

42. .In combination, an electric circuit for propelling vehicles, a controller in the circuit, a valve operating an air bra-ke, and mea-ns independentlj.v of controllerl action to close said air brake valve by pressure on the contr'ol l a handle. l

42%. ln combination an electric circuit for propt-'lling vehicles, a circuit breaker in the circuit', a controller, an air brake valve, and mea-ns .v rcrcbv said circuit breaker and valve are held closed, ind pendentlv of controller action, bv '.nc weight upon the controller ot the operating hand.

4i. ln combination an electra: circuit for propelling vehicles, a circuit breaker in the circuit, a controller, an air bra-ke valve., and means whereby saidcircuit breaker' and valve. are held closed by the weight on the controller of the operative hand, and a rc automatically opened, independcntl;v ol' rontroller action. u pon removal of said weight.

45. ln combination an electric circuit for propelling vchicles'a controlier in the circuit. an air brake valve, and means n'hereb)7 said brake valve. is held inactive by the weight. upon the controller' .of the operative hand., and is automatically opened, indopendr ntlv of controller action, b v removal of said weight. I

lo. ln. combination an electric. circuit for propelling vehicles. a controller' in the eircuit, a handle for the controiler, a circuit breaker, an additional handle in thc controller. and. means whereby the grasp of the operative hand on thcrhandlcs compresses the handles, and closes the circuit breaker 47. ln a safe-tv stop device for' electric vclricles, an electric circuit. a. circuit breaker, a controller' in the circuit, a. handle for the` controller', an air brake valve, an additional handle carried b v the. controller and means whereby the grasp oftlre operative hand on the handles closes the air brake valve.

48. ln a safet}V stop deviccfor electricvehicles in combination, an electric circuit for propelling the vehicle, a controller havinf; a handle, a circuit breaker, an additional handle carried b the controller', an air brake valve tive hand on the handles closes the air brake valve and circuit brealc 49. ln combination, a controller', means and means'wherebv-the grasp of the operalOl) ' for-.O erating said controller, a power actu vIn testimonv whereof I ax Iny signature,

ated. frak, melns for controlling the opera in presence. of tWo witnesses. tiono sai bra @and means, independento controller. action; to automatically Operate' JOHN THOMAS MOINTOSH' 5 said brakecontrol`ling means tov cause said 'Witnesses'. Y' ybrake to be applied,r when the controller op- ROBERT JOSEPH KERR, erating means is released. f LAURA E. THOMPSON. 

